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<h1 class="topictitle1">更新文件扩展名过滤规则</h1>
<div id="body0000001645228818"><p id="ZH-CN_TOPIC_0000002200876201__p8060118">如果您需要修改文件系统关联的文件扩展名过滤规则，请参考本节操作。修改后，文件扩展名状态更新为<span class="uicontrol" id="ZH-CN_TOPIC_0000002200876201__uicontrol319661604311">“已应用”</span>时，新的文件扩展名过滤规则生效。</p>
<div class="section" id="ZH-CN_TOPIC_0000002200876201__section142071477415"><h4 class="sectiontitle">前提条件</h4><p id="ZH-CN_TOPIC_0000002200876201__p1246616101742">如果需要对文件系统新增要拦截的文件扩展名，请先参考<a href="zh-cn_topic_0000002200876205.html">创建文件扩展名过滤规则</a>创建文件扩展名过滤规则。</p>
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<div class="section" id="ZH-CN_TOPIC_0000002200876201__section463212115368"><h4 class="sectiontitle">操作步骤</h4><ol id="ZH-CN_TOPIC_0000002200876201__zh-cn_topic_0000001337156461_ol159217814715"><li id="ZH-CN_TOPIC_0000002200876201__li18319144416020"><span>选择<span class="uicontrol" id="ZH-CN_TOPIC_0000002200876201__uicontrol181232725215">“数据安全 &gt; 文件拦截”</span>。</span></li><li id="ZH-CN_TOPIC_0000002200876201__zh-cn_topic_0000001337156461_zh-cn_topic_0000001166366216_zh-cn_topic_0000001091431193_li12591123311535"><span>进入<span class="uicontrol" id="ZH-CN_TOPIC_0000002200876201__uicontrol1312862511363">“<span id="ZH-CN_TOPIC_0000002200876201__text1146617119461">文件系统</span>”</span>页签，单击某个文件系统所在行的<span class="menucascade" id="ZH-CN_TOPIC_0000002200876201__menucascade85584903615">“<span class="uicontrol" id="ZH-CN_TOPIC_0000002200876201__uicontrol1155549193615"><span id="ZH-CN_TOPIC_0000002200876201__text69159114614">更多</span></span> &gt; <span class="uicontrol" id="ZH-CN_TOPIC_0000002200876201__uicontrol449025019367"><span id="ZH-CN_TOPIC_0000002200876201__text17188183915">更新文件扩展名过滤规则</span></span>”</span>。</span><p><p id="ZH-CN_TOPIC_0000002200876201__p206187206372">系统弹出<span class="uicontrol" id="ZH-CN_TOPIC_0000002200876201__uicontrol97020715383">“<span id="ZH-CN_TOPIC_0000002200876201__text11941615693">更新文件扩展名过滤规则</span>”</span>窗口。所有已关联文件系统的文件扩展名过滤规则默认勾选。您可以根据需要勾选或取消勾选列表中的文件扩展名过滤规则。</p>
<p id="ZH-CN_TOPIC_0000002200876201__p6316202119112"><span><img id="ZH-CN_TOPIC_0000002200876201__image1386142431219" src="zh-cn_image_0000002200876305.png"></span></p>
<p id="ZH-CN_TOPIC_0000002200876201__p1838795253718"></p>
</p></li><li id="ZH-CN_TOPIC_0000002200876201__li1918479182418"><span>单击<span class="uicontrol" id="ZH-CN_TOPIC_0000002200876201__uicontrol13382141812240">“<span id="ZH-CN_TOPIC_0000002200876201__text14358104111468">确定</span>”</span>。</span></li><li id="ZH-CN_TOPIC_0000002200876201__li1643473219246"><span>系统弹出提示框，确认信息无误后，单击<span class="uicontrol" id="ZH-CN_TOPIC_0000002200876201__uicontrol20684135402418">“<span id="ZH-CN_TOPIC_0000002200876201__text9357443194614">确定</span>”</span>。</span></li></ol>
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<div class="parentlink"><strong>父主题：</strong> <a href="zh-cn_topic_0000002200761781.html">管理文件拦截（事前拦截）</a></div>
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